Car wheel and axle lathe



4 Sheets-Sheet 1.

(No Model.)

K. RASMUSSEN.

CAR WHEEL AND AXLE LATHE.

No. 353,814. Patented Dec. '7, 1886.

I J; an

[11TH E55 E5- Q n n m w m a w w m m m a h P s n z 1 2 P N (No Model.) 4 Sheets--Sheet 2. K. RASMUSSBN.

GAR WHEEL AND AXLE LATHE.

Patented De0.-'7, 1886.

I J: on

N. Pnzns. Pholcrblhogmplwr. waimn mm n. c.

(No Model.) 4'S heets--Sheet 3. K. RASMUSSEN.

GAR WHEEL AND AXLE LATHE. No. 353,814. Patented Dec. 7, 1886.

n J 8 A c, V c a, c 5" x v 5 MW m v I l r" I ah m m C n I r n J. D mmmy... 9 E Q 1.1 J m m T. Q mm a d 3 w,.. M 9A m. d J 2 I u m f I. 1 m I- i w "w P W N E (No Model.) Q 4 SheetsSheet '4. K. RASMUSSEN.

OAR WHEEL AND AXLE LATHE.

UNITED STATES PATENT OF ICE.

KNUD RASMUSSEN, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO THE POND MACHINE TOOL COMPANY, OF SAME PLACE.

CAR WHEEL AND AXLE LATHE.

SPECIFICATION forming part of Letters Patent No. 353,814, dated December 7, 1886.

(No model.)

To all whom it may concern.-

Beit known that I, KNUD RASMUSSEN, a citizen of the United States, residing at \Vorcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Improvement in Car Wheel and Axle Lathes, of which the following is a specification.

My invention relates to that class of car wheel and axle lathes which employ a central rotating spool having a gap or opening on one side to receive the car-axle; and it consists in the construction and arrangement of the several parts, as hereinafter set forth and described, reference being had to the accompanying drawings, in which- Figure 1 represents a plan view of my improved lathe. Fig. 2 is a front elevation of the same. Fig. 3 is a transverse vertical sectional view of a portion of the lathe, showing the interior of the case inclosing the drivingwheel. Fig. 4 is a longitudinal sectional view of the rotating spool. Fig. 5 shows the spool removed from the lathe. Fig. 6 is one of the driving-plates. Fig. 7 is a vertical sectional view of one of the heads. Fig. 8 shows the same with a center inserted as used for turning the bearings of the axle. Fig. 9 is an end view of the rocking shaft and aportion of its connected feeding devices. Fig. 10 is a view of the detachable section of the gear G. Fig. 11 is a longitudinal section.

Similar letters refer to similar parts in the several views.

A Adenote the frame of the machine,which is intended to rest on the floor.

B B are head-stocks; O O. central bearings for the rotating spool D, which is shown in Fig. 5, and has a disk, E. attached to its center, and the driving-plates F F at the ends. A gap. G, extending radially through the spool D, disk E, and driving-plates F F, and a similar opening in the side of the central bearings, O 0, (not shown in the drawings,) allow the car-axle to be placed concentrically with the spool D, bringing the car-Wheels H H just outside the driving-plates F F. Sleeves a, a are journaled in the head-stocks B B, having their axes coincident with the axis of the spool D. Screws b b,journaled in the heads a 0, attached to the rotating sleeves a a, actuate the internal sliding sleeves, d d. having tapering or conical chambers e e, in which blocks or brasses ff are placed, adapted to fit the conical chamber and the bearingsg of the caraxle. WVhen the bearings ghave beeninserted between the blocks f f,a sliding motionis given to the internal sleeves, d d, forcing their tapered surfaces over the blocks f f, thereby firmly chucking the bearing of the axle concentrically with the axis of the rotating spool D. Radial screws h h h are carried in each of the driving-plates F E, which are brought against the axle to check its vibration during the operation of turning.

The central driving-gear, G, is formed by fastening an annular toothed plate. G to'the disk E. The toothed plate G has its interior diameter slightly larger than the diameter of the driving-plates F F, so it may be passed over them in the construction of the gearwheel. The annular plate G has also a gap corresponding with the gap in the disk E, which is closed by the toothed section H, having the hooked wings it, fitting similar hooks, it", projecting inwardly from the plate G". Shouldersjj are formed on thesides ot'the section H; or it may be made wedge shaped to prevent its being crowded inwardly. The hooked plate rests against the disk E, toward which it will be drawn by the action of the actuatingscrew, hereinafter described. The driving gear G is inclosed in a shell or case, I, having an opening at its rear side to admit the axle, and closed by the curved cover I, hinged to the case at k.

In a shell, J suspended beneath the frame A and placed obliquely to the axis of the gear G, I place a shaft journaled in suitable bearings in the shell and carrying a screw-thread or worm, J Fig. 11, engaging the teeth of the gear G, and having also at its lower end a gear-wheel inclosed in the shell or case J, which is driven by a screw-thread or worm inclosed in the shell J" and carried on the shaft J having the cone-pulley J, to which power is applied.

The construction and action of the screwthreaded shalts, by which the rotary motion is conveyed from the cone-pulleys J to the gear G, are well known, they being common and familiar. Therefore I have not deemed it necessary to show them in detail in the drawings, but have only indicated their respective -positions by means of their inclosing shells or cases.

Sliding in ways upon the frame or bed A are the tool-rests K K and K K, to which feeding motions are applied by means of the screws Z1 and the hand-screws m m, and which are adapted to properly present cutting-tools to the tread and flange of the car-wheels H H, to which the rotary motion of the drivingplates F F is imparted by means of the dogs n n. When it is desired to turn the journals 9 g of the axle, the brasses ff are removed, the sleeves d d are drawn into the sleeves a a, and centers 0 0 inserted, for which purpose the tool-rests L L are provided, carried on plates p p, which slide in ways on the sides of the head-stocks B B, and are fed by the screws 10' p, the cross-feed being effected by the hand-screws p 19 l Thefeedin g motions of all the cutting-tools namely, those employed in turning the bearings g and those used for turning the treads and flanges of the car-wheels themselvesare accomplished simultaneously by means of the crank-wheel M on a shaft j ournaled in the case J, and driven by the central driving-gear, G, through the pinion N, Fig. 3. The several feedingscrews Z Z 19 1) have each a pawl-andratchet feeding device similar to that employed on planers, and too well known to require detailed illustration in the drawings or an extended description. These are connected by rods (1 with arms g on the rocking shaft 0, to which an' intermittent rocking motion is imparted by the crank-wheel M through the rod 1' and arm 1" on the shaft 0. By disconnecting the pawls from the ratchets in the feeding devices the screws may be operated by hand, if desired, in the same manner as is now commonly done on planers.

Oar wheel and axle lathes are now in use having a spool with a gap to allow the axle to be inserted, and having a driving-gear in the center and driving-plates at the ends. Such I do not claim, broadly; neither do I claim the sliding sleeves having tapered chambers for the purpose of chucking the bearings of the axle, for such have been heretofore used having gears attached thereto forthe purpose of rotating the axle by means of the chucked axle-bearing.

By my present construction I secure a steadiness of motionby means of the worm and gear which is not attainable when the spool is driven by a pinion or pinions engagchines of this class, but I also secure points of support for the axle at the section next the car-wheels by means of the radial screws carried in the driving-plates F F.

I do not confine myself to the arrangement of outer rotating sleeves, ac, journaled in the head-stocks and carrying'inner'sliding sleeves, V

with tapering chambers for chucking the bearings of the car-axles, or for receiving centers, as may be desired, as bearings may be provided in the head-stocks to receive the bearings of the axles; or the ordinary spindle carrying a center, as used in metal-turning lathes, may be employed; but the devices contained in the head-stocks B B are shown as those which may be advantageously used with the machine as herein described.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. A lathe for turning car wheels and axles, consisting, essentially, of head-stocks carrying supports for the ends of the axle, a hollow spindle journaled in bearings coincident with the axle-supporting devices, said spindle having an opening permitting the axle to be received, and a worm gear wheel attached thereto, and a worm adapted to engage said gear and rotate the hollow spindle, so as to impart longitudinal strain to the rotating spindle, and dogging devices by which the motion of the hollow spindle may be imparted to the axle, all combined and operating as set forth, and for the purpose specified. p

2. In a lathe for turning car-wheels, the hollow rotating spindle having a gap to receive the car-axle, and having attached thereto the driving plates or disks F F, the central disk, E, and an annular toothed plate, G, attached to the central disk, E, said plate Gr having its interior diameter larger than the disks F F, all combined as described, and for the purpose set forth.

3. In a car wheel and axle lathe, the combination, with a hollow driving-spindle having a gap permitting the car-axle to be received, of acentral gear attached thereto having a corresponding cap, and a detachable toothed section of gear having hooked wings fitting corresponding hooks in the body of the gear, said hooked section resting against the web of the gear, toward which it is drawn by the action of the actuating-worm, and an actuating-worm engaging said central gear, and having its axis placedobliquely to the axis of the gear, substantially as described, and for tool-rests and present the cutting-tools to successive portions of the surfaces to be turned, said mechanism consisting of a rocking shaft journaled in bearings attached to the bed or frame of the machine, and having a series of arms extending radially therefrom, said arms being connected with a pawl-and-ratchet feeding device on the feeding-screw of each of the In testimony whereof Ihave hereunto affixed tool-rests, and a crank-wheel geared to the my hand this 13th day of April, 1885. revolving spindle of the lathe and connected with a radial arm on said rocking shaft, KNUD RASMUSSEN- whereby an intermittent motion is given to the Witnesses: several feeding-screws, as and for the purpose RUFUS BENNETT FOWLER,

set forth. DAVID W. POND. 

